Sentences with phrase «over the study population»

Despite the authors having experimental control over the study population, they chose to undertake an experimental design in which all dogs first received the control diet, followed by all dogs receiving the experimental diet.

Not exact matches

Lest common sense fail to convince readers that surgery is not a treatment for a mental disorder, a Swedish study published in 2011 found that over the long term, 324 people who had undergone sex - reassignment surgery demonstrated an alarmingly high suicide rate and experienced considerably higher numbers of severe psychiatric problems than were present in the general population.

A comparative study of population growth and the growth of the Sikh movement over the last four decades indicates a steady growth, substantially exceeding the percentage increase of the total population.

something like 75 - 80 % (depending on study) of American's are Christian, yet they make up over 95 % of the prison population.

New research from Harvard University actually suggests that attending «religious services» at least once a week will significantly lower your risk of dying over the next decade and a half — and these results have been replicated in enough studies and populations to be considered highly reliable.

In a new study published on 19 February in the open access journal PLOS Biology, researchers show that similar — or even identical — mutations can occur during diversification in completely separate populations of E. coli evolving in different environments over more than 1000 generations.

In a new study published on 19 February in the open access journal PLOS Biology, researchers show that similar - or even identical - mutations can occur during diversification in completely separate populations of E. coli evolving in different environments over more than 1000 generations.

Over the past ten years, several institutes that study public opinion have regularly asked representative samples of the population of those over eighteen years of age whether they favored or opposed homosexual marriage and adoption of children by same - sex coupOver the past ten years, several institutes that study public opinion have regularly asked representative samples of the population of those over eighteen years of age whether they favored or opposed homosexual marriage and adoption of children by same - sex coupover eighteen years of age whether they favored or opposed homosexual marriage and adoption of children by same - sex couples.

Over the last ten years, several institutes that study public opinion have regularly asked representative samples of the population of those over eighteen years of age whether they favored or opposed homosexual marriage and adoption of children by same - sex coupOver the last ten years, several institutes that study public opinion have regularly asked representative samples of the population of those over eighteen years of age whether they favored or opposed homosexual marriage and adoption of children by same - sex coupover eighteen years of age whether they favored or opposed homosexual marriage and adoption of children by same - sex couples.

«Our study shows that young knees are more prone to re-injury than the adult population when compared to other research in this area - and is the first study to examine the incidence and risk factors for further ACL injury in a solely juvenile population over the long term,» said lead author Justin Roe of North Sydney Orthopaedic & Sports Medicine Centre.

A study commissioned by the Canadian health minister suggests that maternal or newborn programmes in Ontario can maintain low caesarean section rates over time, regardless of their size, location, level of care they provide, and population they serve.

The study captured the opinions and behaviors of more than 5,000 moms and members of the general population as well as an ethnography study of 23 moms that included over 1,000 text logs, 200 video entries, and 32 hours of in - home interviews.

In a study of Korean - American parenting, researchers found that over 75 % of the sample population didn't fit into any of the standard categories (Kim and Rohner 2002).

The increased socioeconomic inequalities in breastfeeding observed in the intervention group supports the argument that population intervention strategies could inadvertently exacerbate, rather than mitigate, socioeconomic inequalities, particularly when the intervention aims to change individual behaviours rather than targeting «upstream» structural changes.25 Our results are also compatible with an observational study from Brazil reporting that breastfeeding rates increased first among the socioeconomically better - off, followed by increases among the poor, over a 20 - year period of active breastfeeding promotion campaigns in Brazil.26

«Future studies are needed to determine if the effect of this intervention is sustainable through the first 6 to 12 months of life, and if this intervention can significantly reduce the incidence of sleep - related death in large populations over time.»

The species was assessed as critically endangered by the International Union for Conservation of Nature (IUCN) in 2009 after more than two decades of population studies indicated that its numbers had plummeted by more than 99 percent over three generations.

Two prominent studies find modest effects, in one case estimating that each 1 % increase in the share of migrants in the UK working age population leads to a 0.6 % decline in the wages of the 5 % lowest paid workers, which would mean about 3p less per hour for someone earning just over the minimum wage of # 6.19.

These studies showing greater genetic diversity in ancient populations suggest it may not be so far - fetched to think that Siberians could have come into contact with people carrying Australasian genes, and then taken those signatures to the Americas over subsequent generations.

Unfortunately, the results of this study suggest that some yellow warbler populations that are most genetically vulnerable to climate change have already been declining over the past half - century, says Bay.

The study looked at data from 9 of Canada's 10 provinces over 31 years from 1981 to 2011 (Prince Edward Island and the northern territories were not included because of insufficient data) to see if social and health care spending ratios were linked to population health status.

Researchers identified the unique feeding pattern by studying food availability and the whales» population over the past 120,000 years.

Through a variety of «high tech» approaches, including the isolation of monoclonal antibodies from single B cells and ultra-deep sequencing of shifting viral populations over more than three years of infection, the researchers studied one woman who developed potent broadly neutralizing antibodies.

But Craig Packer, a biologist at the University of Minnesota who is in charge of a long - term study of the Serengeti lions, believes the population will recover as long as the disease doesn't spill over into the park again.

For the booming moose population of Isle Royale, a key species in the world's longest running predator - prey study on the island, skulls have shrunk by about 16 percent over a 40 - year period.

Over the next several years, Jones watched the populations at her study sites fall by 50 percent a year.

Nonetheless, the overall success rate in the high - risk population is over 88 percent, which the study authors consider high, although complications such as implant explantation and flap problems occur more frequently in the high - risk group than in lower - risk patients.

«Probably the best thing that can come out of [MyConnectome] is inspiring someone to go and do a really great job with a big population of people studied over a long period of time,» says Poldrack.

Servheen adds that USGS biologists are conducting a marking and tracking study that by this summer might help resolve questions over the current population.

Schwartz now wants to do a Yellowstone - wide hair study to help pin down grizzly population trends — information that could prove pivotal in the hot debate over whether the animals are prospering enough to be removed from the U.S. endangered species list (Science, 23 April 1999, p. 568).

The Dark - fly project is the longest - running example of an experimental evolution study where scientists follow a population over many generations.

However, the study noted, over the past 30 years, hybridization rapidly spread upstream, irreversibly reducing the genetic integrity of native westslope cutthroat trout populations.

Mithila Jugulam, assistant professor of agronomy, led a study that looked at how kochia — invasive weed populations that are taking over crops and non-crop areas in western Kansas and the Great Plains — evolved resistance to the most used herbicide glyphosate, more commonly known as Roundup Weed Killer.

The research results build on previous regional studies of genetic diversity and will help scientists to better understand how humpback whale populations evolve over time and how to best advise international management authorities.

They maintain that cognitive tests done over time actually indicate small or no differences in performance among these populations and that studies on risk factors have produced useful, yet insufficient, explanations of the disparities - largely due to the lack of African American participation in research studies.

Because the Chinook salmon diet consists of over 90 percent alewife, the new study predicts a smaller Chinook salmon population if nutrients remain low and invasive mussels remain abundant.

The research, published in the academic journal Scientific Reports, found that sperm quality in a population of stud dogs studied over a 26 - year period had fallen significantly.

Professor Kristina Akesson, Clinical and Molecular Osteoporosis Research Unit at Lund University, Chair of the IOF Capture the Fracture Campaign, stated, «This study concludes that in the population sample of elderly women, vitamin D insufficiency sustained over 5 - years was associated with increased 10 - year risk of osteoporotic fracture.»

In their modelling study, the authors combine clinical information collected in a primary care (general practice) surveillance scheme over 14 years in England and Wales with information on social contacts, and with information on immunity to flu viruses in the population.

Such figures cause conservationists alarm, as the study shows over 54 percent is a level of poaching that elephant birth rates are unable to overcome and will lead to population decline.

One study found that, on average, a single year of county public health spending continued to improve general health status in the population for over four years, ultimately improving the general health status of over 216,000 people.

This is the first study to show that sleep duration has increased among broad segments of the United States population (students 15 and older, people who are employed, and retirees) over this period.

The study explains that if the elites of a city had control over a resource, they presumably had some kind of control over the populations that obtained and manually transported it.

A new study suggests that an aggressive reef competitor — the Threespot Damselfish — may have impeded the recovery of Caribbean long - spined sea urchin populations after a mysterious disease outbreak caused a massive die - off of these animals over three decades ago.

«Near East populations mixed with one another over time and migrated into surrounding regions to mix with the people living there until those initially quite diverse groups became genetically very similar,» added Iosif Lazaridis, HMS research fellow in genetics and first author of the study.

After studying population changes in 154 species of fish worldwide over 60 years, Pinsky was surprised to see marine equivalents of rabbits and mice collapsing to low levels — still shy of extinction but serious enough to disrupt ocean food chains or fishing - based societies.

In this study that followed a large population of Swedish women over 16 years, the difference in median age at death between women with menopause at 40 years and women with menopause at 60 years was 1.3 years.

The researchers, who reported their findings online in Small Business Economics, also found that counties with larger minority population tended to grow more slowly over the period they studied — from 2000 to 2007.

For this study, an international team of researchers from the University of Tuebingen, the Max Planck Institute for the Science of Human History in Jena, the University of Cambridge, the Polish Academy of Sciences, and the Berlin Society of Anthropology, Ethnology and Prehistory, looked at genetic differentiation and population continuity over a 1,300 year timespan, and compared these results to modern populations.

The data collected by observers over the past century allow researchers, conservation biologists and other interested individuals to study the long - term health and status of bird populations across North America.

Published in Nature Communications, the study analysed a population of over 6,000 people with varied ancestry across Latin America to identify new genes associated with hair color, greying, density and shape, i.e. straight or curly.